Homogeneous populations

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  • This is an introductory textbook on mathematical ecology bridging the subdisciplines of population ecology and ecosystem ecology. The expected reader is you: a beginning graduate student, advanced undergraduate student, or someone who thinks of themselves as a student all their lives, with a working knowledge of basic calculus and basic ecology. While this is intended as a stand-alone text, the level is such that once you have read through it, you will be able to read more advanced texts and monographs such as Ågren and Bosatta (1998) and Kot (2001) with greater depth.

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care cung cấp cho các bạn kiến thức về ngành y đề tài: Patients with ischaemic, mixed and nephrotoxic acute tubular necrosis in the intensive care unit – a homogeneous population?

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  • Our new insight is on the interaction between relative labor turnover dynamics and lack of insurers’ premium flexibility. A related possibility is that high labor turnover may be preferred by some employers, especially small firms that employ homogenous workers with low job-specific human capital. Workers tolerant of high turnover tend to be younger and healthier. By not offering health insurance, despite the tax advantage, these firms deter older and less healthy workers.

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  • Preface Nomenclature CHAPTER 1. PHASE CHANGE, NUCLEATION, AND CAVITATION 1.1 Introduction 1.2 The Liquid State 1.3 Fluidity and Elasticity 1.4 Illustration of Tensile Strength 1.5 Cavitation and Boiling 1.6 Types of Nucleation 1.7 Homogeneous Nucleation Theory 1.8 Comparison with Experiments 1.9 Experiments on Tensile Strength 1.10 Heterogeneous Nucleation 1.11 Nucleation Site Populations 1.12 Effect of Contaminant Gas 1.13 Nucleation in Flowing Liquids 1.14 Viscous Effects in Cavitation Inception 1.15 Cavitation Inception Measurements 1.16 Cavitation Inception Data 1.17 Scaling of...

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  • The size of the strata in the population was estimated based on several sources. As far as possible the same source (namely EUROSTAT) was used across countries for the sake of homogeneity and comparability. However, in many cases EUROSTAT statistics are not detailed enough for the purposes of the estimation and national sources were used instead. For the full references on Eurostat and national statistics refer to Annex 2. The following tables set out the stratification of the main sample in each country in comparison to the composition of the population. ...

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  • The goals of experimental neuroscience research are fundamentally to gain mechanistic understanding of the pathology of disease in order to identify appropriate targets for potential pharmacological intervention and evaluation of putative therapies. With the advances in gene manipulation and transgene technologies, we have unprecedented ability to generate animal models of disease that more closely mimic the clinical conditions. Noninvasive techniques capable of investigating altered pathophysiologies are now of paramount importance.

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  • The moderately thermophilic bacteriumAcidithiobacillus caldus is found in bacterial populations in many bioleaching operations throughout the world. This bac-terium oxidizes elemental sulfur and other reduced inor-ganic sulfur compounds as the sole source of energy. The purpose of this study was to purify and characterize the tetrathionate hydrolase of A. caldus. The enzyme was purified 16.7-fold by one step chromatography using a SP Sepharose column. The purified enzyme resolved into a single band in 10% polyacrylamide gel, both under denaturing and native conditions.

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  • The cloned guinea-pig Y2 neuropeptide Y (NPY) receptors expressed in Chinese hamster ovary (CHO) cells, as well as the Y2 receptors natively expressed in rat forebrain, are distributed in two populations. A smaller population that is readily accessed by agonist peptides on the surface of intact cells constitutes less than 30% of Y2 receptors detected in particulates after cell homogenization. A much larger fraction of cell surface Y2 sites can be activated by sulfhydryl modifiers.

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  • Assessing the diversity of AnGR is made more difficult by the existence of many animal populations that are not assigned to any recognized breed. Even though parts of these “non-descript” populations are known to be multiple crosses of recognized breeds, some animals may belong to (relatively) homogenous groups distinguishable from neighbouring populations on the basis of identifiable and stable phenotypic characteristics (among which may be unique and valuable attributes) that warrant their being distinguished as separate breeds.

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  • In order to perform biochemical and pharmacological characterization of CXCR1, we designed several CXCR1 constructs. All constructs, including a CXCR1–Gi2a fusion protein, were produced in insect cells after infection with recombinant baculovirus. The recombinant receptors exhibited specific high-affinity binding of 125 I-labelled interleukin-8, and Scatchard transformation of the binding data indicated the presence of a population of single homogenous binding sites.

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